Search for "Coal_bed_methane" on Wikipedia, Wikimedia Commons, Wiktionary, Wikiquote, Wikibooks, Wikia, Wikitravel, Google (excludes "Wikipedia", adds "water"), Yahoo (excludes "Wikipedia", adds "water"). See also Coal-bed methane extraction Coal bed methane, also called coalbed or coal-bed methane, and in Australia coal seam methane is methane which saturates the water which fills the porous spaces in a coal deposit.